Folder for sewing machines



Nov. 28, 1933. R. J. SAlLER FOLDER FOR SEWING MACHINES Filed March 29. 1935 2 Sheets-Sheet l Rudalph J Sadie)" Nov. 28, 1933. R. J. SAILER 1,937,096

FOLDER FOR SEWING MACHINES Filed March 29, 1933 2 Sheets-Sheet 2 Patented Nov. 28, 1933 v 1,937,096 7 FOLDER on'sEWING MACHINES Rudolph J. Sailer; Townley; N. J;, assignor to. The Singer -Manufacturing Company, Eli zabeth, N J., a corporation of New Jersey Application March29, 193s. SeriafNo. 663,307

' V6 Claims. -(o1'.112-1ss) This invention relates to attachments for sew.- ing machines and =moreparticularly to folders therefor. Q

' The features of the invention and the advantages attained thereby will be readily understood by those skilled in the art from the following'detailed description of a preferred embodiment of the invention. taken in connection with the accompanying drawings, in which:

Figure 1 is a front elevation of the well known Singer multiple'needle chain-stitch sewing machine showing my improved folder fixed thereto.v

Figure 2 is a top plan view of a portion of the sewing machine provided with the present invention.

Figure 3 is a rear elevation of the folder and its support.

Figure 4 is a sectional View taken along the line 4-4 of Figure 2.

55 of Figure 2.

Figure 6 is a disassembled the folder.

The present improvement is shown applied to the well known Singer sewing machine of the type known commercially as the 109 class ma chine. The machine comprises a frame having a base 1, standard 2, and overhanging bracket-arm 3 which terminates in a hollow, head 4 wherein 3 the reciprocating needle-bar 5 carrying the nee-" dles 6 and the presser-bar 7 carrying'a press'er device 8 are journaled. Located below the clothplate 9 are the loopers 11 which are actuated by the main-shaft 10 and cooperate with the needles -6 in the formation of stitches. 7 My improved supporting means for the folder comprises an arm 12 pivotally secured by the shouldered screw 13 to the base or bed-plate 1 for swinging movement in a horizontal plane.

perspective view ,of

screw 14 is a supporting bracket 15 having my improved folder, indicated generally at 16, adjustably secured thereto by means of the elongated slots 17 and the screws 18. To partially restrain and to limit the movement of the bracket 15 about its pivot 14 I have provided the bracket 15 with a knurled headed shouldered screw 19 ex tending through the elongated slot'19' in the arm 12, the screw 19 beingthreaded into the bracket '15.

In some types of material, such as blankets, the nap on the top extends in a direction opposite to the nap on the bottom. When applying bindingto the edges of this type of material the nap on one side tends 'to force one limb of the binding Figure 5 is a sectional view taken along the line I 26 which are spaced apart toform a passageway for the binding strip. The guiding elements 25 Pivotally secured to the arm 12 by the pivot" .widths.

strip outwardly and thenap on the. otherside tends to draw the other 'limlr inwardlyii. To. overcome this crawling effect and to insurethat the binding strip will be bent accurately about the edge of the vwork'sothat the seam may come at anequal distance from each edge of the bind-' v ing strip I have threaded an adjusting screw20 into the depending lug 15" formed on the bracket 15. The adjusting screw-20is formed with a flange 21 which is receivedv by the slot 22 formed between the two upstanding ears 23 on the arm 12. It will be obvious from the foregoing that movement of the screw 20'causes the bracket 15 to swing about the pivot-pin 14 thereby moving the delivery'end of the folder 16 in the arc of a circle and relative to the stitch-forming mechanism. 1

In its preferred embodiment, my improved binder comprises'an inner U shaped guidingelement 25 and an outer U-shaped guiding element and 26 are cut away at' their forward or front ends to form an inclined edge 25' and 26'- and the inner element 25 is providedwitha curved inner wall 35 for the reception of the binding strip as it is reversed, as is well known in this art. The guiding elements are mounted on a shank 27 disposed between the arms 25'- of the inner U-shaped member 25. Upper and lower guideends between the U-shaped guiding elements 25 and 26by the pivot-screws 30 and the members 25 and 26 are held in engagement with the guideplates'28 and 29 by means of the screws 3'7, and

38 whichextend through the elongated slots 39 and 40 formed in the guide-plates 28 and 29. At the receiving end of the binder the guide-plates 28 and 29 are connected by a yoke 31 formed with a notch 32 which receives a thumb-screw 33 threadedinto'the shank 27 and provided with a forth the nature of Having thus set tion, what I claim herein is:'-- g 1. In a binder 'of the class described, in combination, a guiding element, a second guiding I element enclosing and spaced from said first guiding element, upper and lower edge-guidesdisposed between and pivotally secured to said guidamaaccommodation of strips ofvarious 85 plates 28. and 29 are pivoted intermediate their ing elements, and means for moving said edgeguides about their pivots, whereby the binder may be adjusted to accommodate binding strips of various widths. I

2. In a binder of the class'described, in combination, a guiding element, a second guiding element enclosing and spaced from said first guiding'. element, a pair of edge-guides disposed between and pivotally secured to said elements, and a single means for swinging said edge-guides about their pivots; whereby the passageway at the delivery end of the bindermay be varied to accommodate strips of various widths.

3. A1 folding attachment for sewing machines,

comprising a shank, an inner U-shaped guiding "element secured to said shank, an outer U-- shaped guiding element spaced from and enclosing said first mentioned guiding elementso as to form a passageway for a binding strip, edge guides disposed within the space between and pivoted to said guiding elements;. andmeans for moving said edge-guides relative to said guiding elements. Y

4. In a folder of the class described, in combination, a folding element, a, second folding element spaced from and enclosing said first mentioned folding element, a pair of edge-guides for pivotally securing said arm to the bed of themachine, and a thumb-screw for moving said binder in a vertical are about its pivotal connection. a r I 6. In combination with a sewing machine having a frame including a bed and stitch-forming mechanism, a bracket pivoted to the bedoof the machine for swinging movement in a horizontal plane, an arm pivoted to saidbracket, a thumbscrew for moving said arm in a vertical plane about itspivot, .a shank adjustably secured to said arm and a binding folder carried'bysaid shank, said folder comprising inner and outer guiding elements between which are interposed pivoted edge-guides and an adjusting screw for varying the position of said edge-guides.

\ RUDOLPH'J. SAILER. 

